Magnetic and structural study of Fe doped tin dioxide

The structural and magnetic properties of Fe 10 at% doped SnO 2 powders milled for different times have been investigated. XAS results demonstrate the dilution of Fe atoms in the rutile structure after 5 h of milling. Fe atoms have almost one oxygen vacancy near neighbour. At RT the sample presents...

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Veröffentlicht in:	Physica. B, Condensed matter Condensed matter, 2009-10, Vol.404 (18), p.2834-2837
Hauptverfasser:	Bilovol, V., Mudarra Navarro, A.M., Rodríguez Torres, C.E., Sánchez, F.H., Cabrera, A.F.
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Domain effects, magnetization curves, and hysteresis Exact sciences and technology Magnetic properties Magnetic properties and materials Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects Physics Semiconductor oxides Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.) XAS
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Zusammenfassung:	The structural and magnetic properties of Fe 10 at% doped SnO 2 powders milled for different times have been investigated. XAS results demonstrate the dilution of Fe atoms in the rutile structure after 5 h of milling. Fe atoms have almost one oxygen vacancy near neighbour. At RT the sample presents the superposition of paramagnetic and ferromagnetic behaviours. When temperature decreases a progressive blocking process was observed. Below 100 K a field shift of hysteresis loops is evident indicating magnetic coupling between ferromagnetic/antiferromagnetic phases.
ISSN:	0921-4526 1873-2135
DOI:	10.1016/j.physb.2009.06.099